The 4C's Of Diamonds
How a diamond handles light.
1. When a diamond is cut to good proportion, light is reflected from
one facet to another and then dispersed through the crown, or the top of the stone.
2. If the cut of the diamond is too deep, some light escapes through the opposite side of
the pavilion, or bottom.
3. If the cut is too sallow, light escapes through the pavilion before it can be
Many people confuse cut with the shape of a diamond. The shape you
select is a matter of individual taste, and today your choice is only limited by the skill
and imagination of the craftsmen. It is their efforts during every stage of the fashioning
process that reflects the maximum amount of light back to the eye. Most round,
brilliant-cut or fancy-shape diamonds possess 58 carefully angled flat surfaces, called
facets. It is the precision of each facets placement that will affect the
amount of fire, brilliance and ultimate beauty of your diamond.
The most prized diamonds are colorless diamonds, because their
beauty depends entirely upon their remarkable optical properties. In such diamonds all the
colors of the rainbow are reflected back to the eye. While the majority of gem diamonds
appear to be colorless, others can contain increasing shades of yellow to brown, some of
which are referred to as champagne diamonds. Other diamonds of exceptional color, red,
blue, green, pink, and amber, are known as Fancies. The color grading scale
varies from totally colorless to light color or tinted. The difference between one grade
and its neighbor is very subtle. Experts never try to remember color; they use
master diamonds of known color for comparison.
Because of their unique optical properties, diamonds, more than any
gemstone, are capable of producing maximum amount of brilliance. While minute crystals of
diamond or other minerals are contained in almost all diamonds, a diamond that is
virtually free of inclusions and surface markings will be judged as flawless. In these
diamonds, nothing interferes with the passage of light nor spoils the beauty. But these
diamonds are extremely rare and will command a high price. To determine a diamonds
clarity grading, it must be examined under a 10x magnification by a trained, skilled eye.
What minute inclusions there may be make every diamond unique. These are, in fact,
natures fingerprints and do not mar the diamonds beauty nor endanger its
durability. Without high magnification, you may never see these inclusions. However the
fewer there are, the rarer your diamond will be.
As with all precious stones, the weight -- and therefore the size --
of a diamond is expressed in carats. One carat is divided into 100 points so
that a diamond of 25 points is described as a quarter of a carat or 0.25 carats. Size is
the most obvious factor in determining the value of a diamond, but now you know that two
diamonds of equal size can have very unequal prices depending on their quality. However,
remember that diamonds of high quality can be found in all size ranges.